package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

/**
 *公共字段填充类
 * @return
 * @author heiheiheng
 * @create 2025/7/17
 **/
@Slf4j
@Component
@Aspect
public class AutoFillAspect {

    @Before("@annotation(com.sky.annotation.AutoFill)")
    public void autoFill(JoinPoint joinPoint) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        log.info("公共字段填充");
        //获取目标方法的注解
        MethodSignature methodSignature = (MethodSignature)joinPoint.getSignature(); //方法签名
        Method method = methodSignature.getMethod(); //方法对象
        AutoFill autoFill = method.getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();

        Object[] args = joinPoint.getArgs();
        if(args  == null || args.length ==0){
            return;
        }
        Object entity = args[0];
        //获取到目标方法的参数对象
        //判断注解的属性值，如果是insert，则补充四个字段
        if (operationType == OperationType.INSERT) {
            Method setCreatetime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
            Method setUpdatetime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
            Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
            Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
            setCreatetime.invoke(entity,LocalDateTime.now());
            setUpdatetime.invoke(entity,LocalDateTime.now());
            setCreateUser.invoke(entity, BaseContext.getCurrentId());
            setUpdateUser.invoke(entity,BaseContext.getCurrentId());
        } else if (operationType == OperationType.UPDATE) {
            //如果是update，补充两个字段
            Method setUpdatetime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
            Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
            setUpdatetime.invoke(entity,LocalDateTime.now());
            setUpdateUser.invoke(entity,BaseContext.getCurrentId());
        }
    }
}
